3 papers
astro-ph.CO2026
Constraints on the cosmic reheating history from PTA data
Qi-Lin Yang, Shi-Jie Wang, Nan Li
The cosmic reheating is an important epoch in the very early Universe, and has significant impacts on the primordial black hole (PBH) abundance and the scalar-induced gravitational…
physics.gen-ph2026
Probing generalized equation of state for dark energy with latest cosmological probes
Dadian Cheng, Shuo Cao, Yalong Nan +4
Baryon acoustic oscillation (BAO) measurements from DESI DR2 have strengthened indications of a time-evolving dark energy. In this paper, we investigate observational constraints o…
astro-ph.CO2025
Constraints on the inflaton potential from scalar-induced gravitational waves and primordial black holes
Shi-jie Wang, Nan Li
A plateau on the background inflaton potential can lead cosmic inflation into an ultraslow-roll phase, greatly enhancing the primordial power spectrum on small scale…